Provide Tamil interface for Atom Editor - தமிழ் இடைமுகம்

[arcturusannamalai]

Please help translate: Atom Editor to Tamil (தமிழ்) language.

locale code: TA (sub-locales are TA_IN, TA_SL, TA_SG and TA_MY for India, Sri Lanka, Singapore and Malaysia) Tamil Locales locale code table

files Required translation:

• def/TA/about.cson
• def/TA/context.cson
• def/TA/menu_darwin.cson
• def/TA/menu_linux.cson
• def/TA/menu_win32.cson
• def/TA/settings.cson
• def/TA/welcome.cson

• for more info please checkout CONTRIBUTING.md